Quick Reference Charts

Common specifications, color codes, and reference tables organized by discipline.

Aviation

Standard V-speeds, US airspace classification, ATC light gun signals, METAR weather codes, and wake turbulence categories.

Resistor color code, AWG wire gauge, wire color codes, metric prefixes, dB reference, and imperial/metric conversions.

Coaxial cable types with velocity factor and loss ratings, and RF connector types with frequency range and impedance.

Battery chemistry reference, LiPo cell count and voltage specs, and drone motor KV selection guide.

Rocket motor classification table with HPR certification levels, and LiPo battery cell count reference.

HAM license class privileges comparison and the 38 standard CTCSS tones.

ICAO/NATO phonetic alphabet, Q codes for amateur radio and aviation, RST signal reports, and APRS status codes.

Fractional, number and letter drills with decimal and metric equivalents, a nearest-drill finder, and UNC/UNF tap drill sizes.

Single and double margin, parabolic, gun drills, split points, drill lengths, step drills, reamers and countersinks: what each is for.

ATA iSpec 2200 chapter numbers for every aircraft system, from 05 Time Limits to 32 Landing Gear and 80 Starting, with how to read 32-41-00.

AN/MS bolt head markings, fastener identification, rivet types and identification, safety wire gauges, and cotter pin specifications.